362 
I Assembly 
Sandstone appears in the bank in many places, and at such points the 
land is in a measure protected from the action of the waves. All the 
projecting points along the lake shore are of sandstone, or marl of the 
same formation, and where it does not appear in the bank, it is found at 
a little depth below the level of the lake. The most northerly point of 
this rock on the lake shore is at least six hundred feet below the upper 
stratum of the formation. 
The pebbles along the lake shore are red sandstone, and greenish blue 
siliceous limestone, both containing fossils, the latter rock more abun- 
dantly. The fossils in these pebbles are Corallines^ Orthocera^ bivalve 
and univalve shells?. Both the character of the stone, and the fossils, 
differ from any in the Fourth District. From the situation and appear- 
ance of these pebbles, they may have been derived from a lower mem- 
ber of the marl and sandstone formation. The mineralogical character 
of the pebbles along the lake shore farther east, is very similar, but they 
contain no fossils. The pebbles in the lake ridge, in Niagara county, 
exhibit the same fossils, and are precisely similar, to those on the lake 
shore. 
The ponds and marshes at the outlets of streams along the lake shore 
are gradually filling up by the same process as in Monroe county. 
Those in Niagara county are but few. 
Abraded materials from the banks are transported by the water, and 
form bars and shoals at the mouths of smaller streams. The only river 
is the Niagara, and the immense body of water brought down its chan- 
nel entirely prevents any obstruction from depositions at its mouth. 
Boulders, 
Boulders of granite, and other rocks, are scattered over the northern 
part of the county, in some places the surface being literally covered 
with them, while in the southern part they are almost entirely absent. 
In this respect Niagara county differs from Monroe, where in the south- 
ern part boulders are very abundant and of large size. They are more 
abundant in the eastern part of this county than towards the Niagara 
river. These boulders appear to follow certain courses, and to extend 
in great profusion over certain districts; this distribution appears to 
have been governed by some law, and we may yet arrive at data which 
will enable us to describe the diluvial and its varying characters with as 
much, or more precision than we now do a stratum, or a series of strata 
in an older formation. 
